Microsoft has re-released Security Updates (SUs) for vulnerabilities found in:

  • Exchange Server 2019
  • Exchange Server 2016

SUs are available for the following specific versions of Exchange Server:

  • Exchange Server 2019 CU12 and CU13
  • Exchange Server 2016 CU23

More information from Microsoft about the re-release is available here.

The following table describes the actions you need to take based on your environment:

If Aug SUv1…And you…Then, you should…
…was installed manually without any problems or issues(no corrective action was needed)Optionally install Aug SUv2 or install later SUs (when released)
…was installed automatically (Microsoft / Windows Update) without any problems or issues(no corrective action was needed)Aug SUv2 will be downloaded automatically. Install later SUs (when released)
…failed during Setup, and left Exchange services disabled…restarted the Exchange services using ServiceControl.ps1 AfterPatch (or other means), but you did not install Aug SUv1Install Aug SUv2 and then later SUs (when released)
…failed during Setup, and left Exchange services disabled…restarted the Exchange services using ServiceControl.ps1 AfterPatch (or other means), and you used the workaround to manually create a “Network Service” account and then installed Aug SUv11. Uninstall Aug SUv1 and reboot 2. Remove the manually created “Network Service” account (if it still exists)

3. Install Aug SUv2 and then later SUs (when released)
…was not/never installed…want to keep your Exchange server up-to-dateInstall Aug SUv2 and then later SUs (when released)

Update installation

The following update paths are available:

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							Released: August 2023 Exchange Server Security Updates


Reach out to Messageware to improve Microsoft Exchange Server Security

If you are not protecting all the protocols used by your Exchange Server, you’re putting your company at a higher risk of a data breach.

Security incidents happen frequently. They cause disruption, loss of data and potentially risk the reputation of your company. However, if you implement these steps, you’re doing more than most other companies.

Have you heard about Messageware’s EPG that offers advanced Exchange Server security to protect organizations from a variety of logon and password attacks, as well as extensive real-time reporting and alerts of suspicious logon activity? Click here to learn more.